Start with style: Miami Cuban links make a bold statement, herringbone chains lie flat with a smooth shine, and paperclip chains suit layering. For necklaces, 18 inches sits at the collarbone and is the most popular length, while 20 to 24 inches falls lower on the chest. For bracelets, 7 to 7.5 inches fits most wrists, and 8 inches or longer suits larger wrists or a looser fit.